World's Most Extraordinary Homes
BBC TWO
Saturday 30 December 2017 13:20 - 14:20 (60 mins)
4/4. Underground: Piers Taylor and Caroline Quentin explore extraordinary homes built underground. In the Swiss Alps, a four-bedroom house has to be accessed via a tunnel. Also in HD. [AD,S]
World's Most Extraordinary Homes may be available on playback
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